Farsi (Persian) is spoken by the majority of the population in Iran, though a significant portion of the population also speaks other languages/dialects such as Azeri, Kurdish, Lori, Arabic, Baluchi, Gilaki, Mazandarani, and Turkmen. The vast majority of Iranians are Muslims. There are also small populations of Zoroastrians, Christians, Jewish people, and people of other faiths living in Iran. The capital of Iran is Tehran. Iran also has one of the largest nomadic populations in the world .